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Posted to commits@airflow.apache.org by ma...@apache.org on 2016/06/05 05:24:18 UTC
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+ <h1>Source code for bash_operator</h1><div class="highlight"><pre>
+<span></span>
+<span class="kn">from</span> <span class="nn">builtins</span> <span class="kn">import</span> <span class="nb">bytes</span>
+<span class="kn">import</span> <span class="nn">logging</span>
+<span class="kn">from</span> <span class="nn">subprocess</span> <span class="kn">import</span> <span class="n">Popen</span><span class="p">,</span> <span class="n">STDOUT</span><span class="p">,</span> <span class="n">PIPE</span>
+<span class="kn">from</span> <span class="nn">tempfile</span> <span class="kn">import</span> <span class="n">gettempdir</span><span class="p">,</span> <span class="n">NamedTemporaryFile</span>
+
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span>
+<span class="kn">from</span> <span class="nn">airflow.models</span> <span class="kn">import</span> <span class="n">BaseOperator</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="kn">import</span> <span class="n">apply_defaults</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.file</span> <span class="kn">import</span> <span class="n">TemporaryDirectory</span>
+
+
+<div class="viewcode-block" id="BashOperator"><a class="viewcode-back" href="../code.html#airflow.operators.BashOperator">[docs]</a><span class="k">class</span> <span class="nc">BashOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Execute a Bash script, command or set of commands.</span>
+
+<span class="sd"> :param bash_command: The command, set of commands or reference to a</span>
+<span class="sd"> bash script (must be '.sh') to be executed.</span>
+<span class="sd"> :type bash_command: string</span>
+<span class="sd"> :param env: If env is not None, it must be a mapping that defines the</span>
+<span class="sd"> environment variables for the new process; these are used instead</span>
+<span class="sd"> of inheriting the current process environment, which is the default</span>
+<span class="sd"> behavior. (templated)</span>
+<span class="sd"> :type env: dict</span>
+<span class="sd"> :type output_encoding: output encoding of bash command</span>
+<span class="sd"> """</span>
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'bash_command'</span><span class="p">,</span> <span class="s1">'env'</span><span class="p">)</span>
+ <span class="n">template_ext</span> <span class="o">=</span> <span class="p">(</span><span class="s1">'.sh'</span><span class="p">,</span> <span class="s1">'.bash'</span><span class="p">,)</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#f0ede4'</span>
+
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span>
+ <span class="n">bash_command</span><span class="p">,</span>
+ <span class="n">xcom_push</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span>
+ <span class="n">env</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span>
+ <span class="n">output_encoding</span><span class="o">=</span><span class="s1">'utf-8'</span><span class="p">,</span>
+ <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> If xcom_push is True, the last line written to stdout will also</span>
+<span class="sd"> be pushed to an XCom when the bash command completes.</span>
+<span class="sd"> """</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">BashOperator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">bash_command</span> <span class="o">=</span> <span class="n">bash_command</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">env</span> <span class="o">=</span> <span class="n">env</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">xcom_push_flag</span> <span class="o">=</span> <span class="n">xcom_push</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">output_encoding</span> <span class="o">=</span> <span class="n">output_encoding</span>
+
+<div class="viewcode-block" id="BashOperator.execute"><a class="viewcode-back" href="../code.html#airflow.operators.BashOperator.execute">[docs]</a> <span class="k">def</span> <span class="nf">execute</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Execute the bash command in a temporary directory</span>
+<span class="sd"> which will be cleaned afterwards</span>
+<span class="sd"> """</span>
+ <span class="n">bash_command</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">bash_command</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"tmp dir root location: </span><span class="se">\n</span><span class="s2">"</span> <span class="o">+</span> <span class="n">gettempdir</span><span class="p">())</span>
+ <span class="k">with</span> <span class="n">TemporaryDirectory</span><span class="p">(</span><span class="n">prefix</span><span class="o">=</span><span class="s1">'airflowtmp'</span><span class="p">)</span> <span class="k">as</span> <span class="n">tmp_dir</span><span class="p">:</span>
+ <span class="k">with</span> <span class="n">NamedTemporaryFile</span><span class="p">(</span><span class="nb">dir</span><span class="o">=</span><span class="n">tmp_dir</span><span class="p">,</span> <span class="n">prefix</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">task_id</span><span class="p">)</span> <span class="k">as</span> <span class="n">f</span><span class="p">:</span>
+
+ <span class="n">f</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="nb">bytes</span><span class="p">(</span><span class="n">bash_command</span><span class="p">,</span> <span class="s1">'utf_8'</span><span class="p">))</span>
+ <span class="n">f</span><span class="o">.</span><span class="n">flush</span><span class="p">()</span>
+ <span class="n">fname</span> <span class="o">=</span> <span class="n">f</span><span class="o">.</span><span class="n">name</span>
+ <span class="n">script_location</span> <span class="o">=</span> <span class="n">tmp_dir</span> <span class="o">+</span> <span class="s2">"/"</span> <span class="o">+</span> <span class="n">fname</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Temporary script "</span>
+ <span class="s2">"location :{0}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">script_location</span><span class="p">))</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Running command: "</span> <span class="o">+</span> <span class="n">bash_command</span><span class="p">)</span>
+ <span class="n">sp</span> <span class="o">=</span> <span class="n">Popen</span><span class="p">(</span>
+ <span class="p">[</span><span class="s1">'bash'</span><span class="p">,</span> <span class="n">fname</span><span class="p">],</span>
+ <span class="n">stdout</span><span class="o">=</span><span class="n">PIPE</span><span class="p">,</span> <span class="n">stderr</span><span class="o">=</span><span class="n">STDOUT</span><span class="p">,</span>
+ <span class="n">cwd</span><span class="o">=</span><span class="n">tmp_dir</span><span class="p">,</span> <span class="n">env</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">env</span><span class="p">)</span>
+
+ <span class="bp">self</span><span class="o">.</span><span class="n">sp</span> <span class="o">=</span> <span class="n">sp</span>
+
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Output:"</span><span class="p">)</span>
+ <span class="n">line</span> <span class="o">=</span> <span class="s1">''</span>
+ <span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="nb">iter</span><span class="p">(</span><span class="n">sp</span><span class="o">.</span><span class="n">stdout</span><span class="o">.</span><span class="n">readline</span><span class="p">,</span> <span class="n">b</span><span class="s1">''</span><span class="p">):</span>
+ <span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="o">.</span><span class="n">decode</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">output_encoding</span><span class="p">)</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">line</span><span class="p">)</span>
+ <span class="n">sp</span><span class="o">.</span><span class="n">wait</span><span class="p">()</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Command exited with "</span>
+ <span class="s2">"return code {0}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">sp</span><span class="o">.</span><span class="n">returncode</span><span class="p">))</span>
+
+ <span class="k">if</span> <span class="n">sp</span><span class="o">.</span><span class="n">returncode</span><span class="p">:</span>
+ <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"Bash command failed"</span><span class="p">)</span>
+
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">xcom_push_flag</span><span class="p">:</span>
+ <span class="k">return</span> <span class="n">line</span></div>
+
+ <span class="k">def</span> <span class="nf">on_kill</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s1">'Sending SIGTERM signal to bash subprocess'</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">sp</span><span class="o">.</span><span class="n">terminate</span><span class="p">()</span></div>
+</pre></div>
+
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+
+ <h1>Source code for cloudant_hook</h1><div class="highlight"><pre>
+<span></span><span class="c1"># -*- coding: utf-8 -*-</span>
+<span class="c1">#</span>
+<span class="c1"># Licensed under the Apache License, Version 2.0 (the "License");</span>
+<span class="c1"># you may not use this file except in compliance with the License.</span>
+<span class="c1"># You may obtain a copy of the License at</span>
+<span class="c1">#</span>
+<span class="c1"># http://www.apache.org/licenses/LICENSE-2.0</span>
+<span class="c1">#</span>
+<span class="c1"># Unless required by applicable law or agreed to in writing, software</span>
+<span class="c1"># distributed under the License is distributed on an "AS IS" BASIS,</span>
+<span class="c1"># WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
+<span class="c1"># See the License for the specific language governing permissions and</span>
+<span class="c1"># limitations under the License.</span>
+<span class="kn">import</span> <span class="nn">logging</span>
+
+<span class="kn">import</span> <span class="nn">cloudant</span>
+
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span>
+<span class="kn">from</span> <span class="nn">airflow.hooks.base_hook</span> <span class="kn">import</span> <span class="n">BaseHook</span>
+
+
+<div class="viewcode-block" id="CloudantHook"><a class="viewcode-back" href="../code.html#airflow.contrib.hooks.CloudantHook">[docs]</a><span class="k">class</span> <span class="nc">CloudantHook</span><span class="p">(</span><span class="n">BaseHook</span><span class="p">):</span>
+ <span class="sd">"""Interact with Cloudant.</span>
+
+<span class="sd"> This class is a thin wrapper around the cloudant python library. See the</span>
+<span class="sd"> documentation `here <https://github.com/cloudant-labs/cloudant-python>`_.</span>
+<span class="sd"> """</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">cloudant_conn_id</span><span class="o">=</span><span class="s1">'cloudant_default'</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">CloudantHook</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="s1">'cloudant'</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">cloudant_conn_id</span> <span class="o">=</span> <span class="n">cloudant_conn_id</span>
+
+ <span class="k">def</span> <span class="nf">get_conn</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="k">def</span> <span class="nf">_str</span><span class="p">(</span><span class="n">s</span><span class="p">):</span>
+ <span class="c1"># cloudant-python doesn't support unicode.</span>
+ <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="nb">unicode</span><span class="p">):</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">debug</span><span class="p">((</span><span class="s1">'cloudant-python does not support unicode. '</span>
+ <span class="s1">'Encoding </span><span class="si">%s</span><span class="s1"> as ascii using "ignore".'</span><span class="p">),</span>
+ <span class="n">s</span><span class="p">)</span>
+ <span class="k">return</span> <span class="n">s</span><span class="o">.</span><span class="n">encode</span><span class="p">(</span><span class="s1">'ascii'</span><span class="p">,</span> <span class="s1">'ignore'</span><span class="p">)</span>
+
+ <span class="k">return</span> <span class="n">s</span>
+
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connection</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">cloudant_conn_id</span><span class="p">)</span>
+
+ <span class="k">for</span> <span class="n">conn_param</span> <span class="ow">in</span> <span class="p">[</span><span class="s1">'host'</span><span class="p">,</span> <span class="s1">'password'</span><span class="p">,</span> <span class="s1">'schema'</span><span class="p">]:</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">conn</span><span class="p">,</span> <span class="n">conn_param</span><span class="p">)</span> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">conn</span><span class="p">,</span> <span class="n">conn_param</span><span class="p">):</span>
+ <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span>
+ <span class="s1">'missing connection parameter {0}'</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">conn_param</span><span class="p">)</span>
+ <span class="p">)</span>
+
+ <span class="c1"># In the connection form:</span>
+ <span class="c1"># - 'host' is renamed to 'Account'</span>
+ <span class="c1"># - 'login' is renamed 'Username (or API Key)'</span>
+ <span class="c1"># - 'schema' is renamed to 'Database'</span>
+ <span class="c1">#</span>
+ <span class="c1"># So, use the 'host' attribute as the account name, and, if login is</span>
+ <span class="c1"># defined, use that as the username.</span>
+ <span class="n">account</span> <span class="o">=</span> <span class="n">cloudant</span><span class="o">.</span><span class="n">Account</span><span class="p">(</span><span class="n">_str</span><span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">host</span><span class="p">))</span>
+
+ <span class="n">username</span> <span class="o">=</span> <span class="n">_str</span><span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">login</span> <span class="ow">or</span> <span class="n">conn</span><span class="o">.</span><span class="n">host</span><span class="p">)</span>
+
+ <span class="n">account</span><span class="o">.</span><span class="n">login</span><span class="p">(</span>
+ <span class="n">username</span><span class="p">,</span>
+ <span class="n">_str</span><span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">password</span><span class="p">))</span><span class="o">.</span><span class="n">raise_for_status</span><span class="p">()</span>
+
+ <span class="k">return</span> <span class="n">account</span><span class="o">.</span><span class="n">database</span><span class="p">(</span><span class="n">_str</span><span class="p">(</span><span class="n">conn</span><span class="o">.</span><span class="n">schema</span><span class="p">))</span>
+
+<div class="viewcode-block" id="CloudantHook.db"><a class="viewcode-back" href="../code.html#airflow.contrib.hooks.CloudantHook.db">[docs]</a> <span class="k">def</span> <span class="nf">db</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""Returns the Database object for this hook.</span>
+
+<span class="sd"> See the documentation for cloudant-python here</span>
+<span class="sd"> https://github.com/cloudant-labs/cloudant-python.</span>
+<span class="sd"> """</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span></div></div>
+</pre></div>
+
+ </div>
+ </div>
+ <footer>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2014, Maxime Beauchemin, Airbnb.
+
+ </p>
+ </div>
+ Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
+
+</footer>
+
+ </div>
+ </div>
+
+ </section>
+
+ </div>
+
+
+
+
+
+ <script type="text/javascript">
+ var DOCUMENTATION_OPTIONS = {
+ URL_ROOT:'../',
+ VERSION:'',
+ COLLAPSE_INDEX:false,
+ FILE_SUFFIX:'.html',
+ HAS_SOURCE: true
+ };
+ </script>
+ <script type="text/javascript" src="../_static/jquery.js"></script>
+ <script type="text/javascript" src="../_static/underscore.js"></script>
+ <script type="text/javascript" src="../_static/doctools.js"></script>
+
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+ });
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+</body>
+</html>
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/incubator-airflow-site/blob/9e19165c/_modules/dagrun_operator.html
----------------------------------------------------------------------
diff --git a/_modules/dagrun_operator.html b/_modules/dagrun_operator.html
new file mode 100644
index 0000000..66f5cef
--- /dev/null
+++ b/_modules/dagrun_operator.html
@@ -0,0 +1,260 @@
+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
+<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
+<head>
+ <meta charset="utf-8">
+
+ <meta name="viewport" content="width=device-width, initial-scale=1.0">
+
+ <title>dagrun_operator — Airflow Documentation</title>
+
+
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+
+
+
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+
+
+
+
+
+
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+
+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
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+<li class="toctree-l1"><a class="reference internal" href="../project.html">Project</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../license.html">License</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../start.html">Quick Start</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../profiling.html">Data Profiling</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../cli.html">Command Line Interface</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../scheduler.html">Scheduling & Triggers</a></li>
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+<li class="toctree-l1"><a class="reference internal" href="../security.html">Security</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../faq.html">FAQ</a></li>
+<li class="toctree-l1"><a class="reference internal" href="../code.html">API Reference</a></li>
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+ <li><a href="../index.html">Docs</a> »</li>
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+ <div itemprop="articleBody">
+
+ <h1>Source code for dagrun_operator</h1><div class="highlight"><pre>
+<span></span><span class="kn">from</span> <span class="nn">datetime</span> <span class="kn">import</span> <span class="n">datetime</span>
+<span class="kn">import</span> <span class="nn">logging</span>
+
+<span class="kn">from</span> <span class="nn">airflow.models</span> <span class="kn">import</span> <span class="n">BaseOperator</span><span class="p">,</span> <span class="n">DagRun</span>
+<span class="kn">from</span> <span class="nn">airflow.utils.decorators</span> <span class="kn">import</span> <span class="n">apply_defaults</span>
+<span class="kn">from</span> <span class="nn">airflow</span> <span class="kn">import</span> <span class="n">settings</span>
+
+
+<span class="k">class</span> <span class="nc">DagRunOrder</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">run_id</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">payload</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">run_id</span> <span class="o">=</span> <span class="n">run_id</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">payload</span> <span class="o">=</span> <span class="n">payload</span>
+
+
+<div class="viewcode-block" id="TriggerDagRunOperator"><a class="viewcode-back" href="../code.html#airflow.operators.TriggerDagRunOperator">[docs]</a><span class="k">class</span> <span class="nc">TriggerDagRunOperator</span><span class="p">(</span><span class="n">BaseOperator</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Triggers a DAG run for a specified ``dag_id`` if a criteria is met</span>
+
+<span class="sd"> :param trigger_dag_id: the dag_id to trigger</span>
+<span class="sd"> :type trigger_dag_id: str</span>
+<span class="sd"> :param python_callable: a reference to a python function that will be</span>
+<span class="sd"> called while passing it the ``context`` object and a placeholder</span>
+<span class="sd"> object ``obj`` for your callable to fill and return if you want</span>
+<span class="sd"> a DagRun created. This ``obj`` object contains a ``run_id`` and</span>
+<span class="sd"> ``payload`` attribute that you can modify in your function.</span>
+<span class="sd"> The ``run_id`` should be a unique identifier for that DAG run, and</span>
+<span class="sd"> the payload has to be a picklable object that will be made available</span>
+<span class="sd"> to your tasks while executing that DAG run. Your function header</span>
+<span class="sd"> should look like ``def foo(context, dag_run_obj):``</span>
+<span class="sd"> :type python_callable: python callable</span>
+<span class="sd"> """</span>
+ <span class="n">template_fields</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">()</span>
+ <span class="n">template_ext</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">()</span>
+ <span class="n">ui_color</span> <span class="o">=</span> <span class="s1">'#ffefeb'</span>
+ <span class="nd">@apply_defaults</span>
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span>
+ <span class="bp">self</span><span class="p">,</span>
+ <span class="n">trigger_dag_id</span><span class="p">,</span>
+ <span class="n">python_callable</span><span class="p">,</span>
+ <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="nb">super</span><span class="p">(</span><span class="n">TriggerDagRunOperator</span><span class="p">,</span> <span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__init__</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">)</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">python_callable</span> <span class="o">=</span> <span class="n">python_callable</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">trigger_dag_id</span> <span class="o">=</span> <span class="n">trigger_dag_id</span>
+
+ <span class="k">def</span> <span class="nf">execute</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">context</span><span class="p">):</span>
+ <span class="n">dro</span> <span class="o">=</span> <span class="n">DagRunOrder</span><span class="p">(</span><span class="n">run_id</span><span class="o">=</span><span class="s1">'trig__'</span> <span class="o">+</span> <span class="n">datetime</span><span class="o">.</span><span class="n">now</span><span class="p">()</span><span class="o">.</span><span class="n">isoformat</span><span class="p">())</span>
+ <span class="n">dro</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">python_callable</span><span class="p">(</span><span class="n">context</span><span class="p">,</span> <span class="n">dro</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">dro</span><span class="p">:</span>
+ <span class="n">session</span> <span class="o">=</span> <span class="n">settings</span><span class="o">.</span><span class="n">Session</span><span class="p">()</span>
+ <span class="n">dr</span> <span class="o">=</span> <span class="n">DagRun</span><span class="p">(</span>
+ <span class="n">dag_id</span><span class="o">=</span><span class="bp">self</span><span class="o">.</span><span class="n">trigger_dag_id</span><span class="p">,</span>
+ <span class="n">run_id</span><span class="o">=</span><span class="n">dro</span><span class="o">.</span><span class="n">run_id</span><span class="p">,</span>
+ <span class="n">conf</span><span class="o">=</span><span class="n">dro</span><span class="o">.</span><span class="n">payload</span><span class="p">,</span>
+ <span class="n">external_trigger</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Creating DagRun {}"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">dr</span><span class="p">))</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dr</span><span class="p">)</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">session</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="s2">"Criteria not met, moving on"</span><span class="p">)</span></div>
+</pre></div>
+
+ </div>
+ </div>
+ <footer>
+
+
+ <hr/>
+
+ <div role="contentinfo">
+ <p>
+ © Copyright 2014, Maxime Beauchemin, Airbnb.
+
+ </p>
+ </div>
+ Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
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http://git-wip-us.apache.org/repos/asf/incubator-airflow-site/blob/9e19165c/_modules/dbapi_hook.html
----------------------------------------------------------------------
diff --git a/_modules/dbapi_hook.html b/_modules/dbapi_hook.html
new file mode 100644
index 0000000..06bbb28
--- /dev/null
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@@ -0,0 +1,426 @@
+
+
+<!DOCTYPE html>
+<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
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+ <h1>Source code for dbapi_hook</h1><div class="highlight"><pre>
+<span></span>
+<span class="kn">from</span> <span class="nn">builtins</span> <span class="kn">import</span> <span class="nb">str</span>
+<span class="kn">from</span> <span class="nn">past.builtins</span> <span class="kn">import</span> <span class="nb">basestring</span>
+<span class="kn">from</span> <span class="nn">datetime</span> <span class="kn">import</span> <span class="n">datetime</span>
+<span class="kn">import</span> <span class="nn">numpy</span>
+<span class="kn">import</span> <span class="nn">logging</span>
+
+<span class="kn">from</span> <span class="nn">airflow.hooks.base_hook</span> <span class="kn">import</span> <span class="n">BaseHook</span>
+<span class="kn">from</span> <span class="nn">airflow.exceptions</span> <span class="kn">import</span> <span class="n">AirflowException</span>
+
+
+<div class="viewcode-block" id="DbApiHook"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook">[docs]</a><span class="k">class</span> <span class="nc">DbApiHook</span><span class="p">(</span><span class="n">BaseHook</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Abstract base class for sql hooks.</span>
+<span class="sd"> """</span>
+ <span class="c1"># Override to provide the connection name.</span>
+ <span class="n">conn_name_attr</span> <span class="o">=</span> <span class="bp">None</span>
+ <span class="c1"># Override to have a default connection id for a particular dbHook</span>
+ <span class="n">default_conn_name</span> <span class="o">=</span> <span class="s1">'default_conn_id'</span>
+ <span class="c1"># Override if this db supports autocommit.</span>
+ <span class="n">supports_autocommit</span> <span class="o">=</span> <span class="bp">False</span>
+ <span class="c1"># Override with the object that exposes the connect method</span>
+ <span class="n">connector</span> <span class="o">=</span> <span class="bp">None</span>
+
+ <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+ <span class="k">if</span> <span class="ow">not</span> <span class="bp">self</span><span class="o">.</span><span class="n">conn_name_attr</span><span class="p">:</span>
+ <span class="k">raise</span> <span class="n">AirflowException</span><span class="p">(</span><span class="s2">"conn_name_attr is not defined"</span><span class="p">)</span>
+ <span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span>
+ <span class="nb">setattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">conn_name_attr</span><span class="p">,</span> <span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
+ <span class="k">elif</span> <span class="bp">self</span><span class="o">.</span><span class="n">conn_name_attr</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">kwargs</span><span class="p">:</span>
+ <span class="nb">setattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">conn_name_attr</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_conn_name</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="nb">setattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">conn_name_attr</span><span class="p">,</span> <span class="n">kwargs</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">conn_name_attr</span><span class="p">])</span>
+
+<div class="viewcode-block" id="DbApiHook.get_conn"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.get_conn">[docs]</a> <span class="k">def</span> <span class="nf">get_conn</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""Returns a connection object</span>
+<span class="sd"> """</span>
+ <span class="n">db</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_connection</span><span class="p">(</span><span class="nb">getattr</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">conn_name_attr</span><span class="p">))</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">connector</span><span class="o">.</span><span class="n">connect</span><span class="p">(</span>
+ <span class="n">host</span><span class="o">=</span><span class="n">db</span><span class="o">.</span><span class="n">host</span><span class="p">,</span>
+ <span class="n">port</span><span class="o">=</span><span class="n">db</span><span class="o">.</span><span class="n">port</span><span class="p">,</span>
+ <span class="n">username</span><span class="o">=</span><span class="n">db</span><span class="o">.</span><span class="n">login</span><span class="p">,</span>
+ <span class="n">schema</span><span class="o">=</span><span class="n">db</span><span class="o">.</span><span class="n">schema</span><span class="p">)</span></div>
+
+
+<div class="viewcode-block" id="DbApiHook.get_pandas_df"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.get_pandas_df">[docs]</a> <span class="k">def</span> <span class="nf">get_pandas_df</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sql</span><span class="p">,</span> <span class="n">parameters</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
+ <span class="sd">'''</span>
+<span class="sd"> Executes the sql and returns a pandas dataframe</span>
+
+<span class="sd"> :param sql: the sql statement to be executed (str) or a list of</span>
+<span class="sd"> sql statements to execute</span>
+<span class="sd"> :type sql: str or list</span>
+<span class="sd"> :param parameters: The parameters to render the SQL query with.</span>
+<span class="sd"> :type parameters: mapping or iterable</span>
+<span class="sd"> '''</span>
+ <span class="kn">import</span> <span class="nn">pandas.io.sql</span> <span class="kn">as</span> <span class="nn">psql</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
+ <span class="n">df</span> <span class="o">=</span> <span class="n">psql</span><span class="o">.</span><span class="n">read_sql</span><span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">con</span><span class="o">=</span><span class="n">conn</span><span class="p">,</span> <span class="n">params</span><span class="o">=</span><span class="n">parameters</span><span class="p">)</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">df</span></div>
+
+<div class="viewcode-block" id="DbApiHook.get_records"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.get_records">[docs]</a> <span class="k">def</span> <span class="nf">get_records</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sql</span><span class="p">,</span> <span class="n">parameters</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
+ <span class="sd">'''</span>
+<span class="sd"> Executes the sql and returns a set of records.</span>
+
+<span class="sd"> :param sql: the sql statement to be executed (str) or a list of</span>
+<span class="sd"> sql statements to execute</span>
+<span class="sd"> :type sql: str or list</span>
+<span class="sd"> :param parameters: The parameters to render the SQL query with.</span>
+<span class="sd"> :type parameters: mapping or iterable</span>
+<span class="sd"> '''</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
+ <span class="n">cur</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_cursor</span><span class="p">()</span>
+ <span class="k">if</span> <span class="n">parameters</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">parameters</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql</span><span class="p">)</span>
+ <span class="n">rows</span> <span class="o">=</span> <span class="n">cur</span><span class="o">.</span><span class="n">fetchall</span><span class="p">()</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">rows</span></div>
+
+<div class="viewcode-block" id="DbApiHook.get_first"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.get_first">[docs]</a> <span class="k">def</span> <span class="nf">get_first</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sql</span><span class="p">,</span> <span class="n">parameters</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
+ <span class="sd">'''</span>
+<span class="sd"> Executes the sql and returns the first resulting row.</span>
+
+<span class="sd"> :param sql: the sql statement to be executed (str) or a list of</span>
+<span class="sd"> sql statements to execute</span>
+<span class="sd"> :type sql: str or list</span>
+<span class="sd"> :param parameters: The parameters to render the SQL query with.</span>
+<span class="sd"> :type parameters: mapping or iterable</span>
+<span class="sd"> '''</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
+ <span class="n">cur</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">cursor</span><span class="p">()</span>
+ <span class="k">if</span> <span class="n">parameters</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">parameters</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql</span><span class="p">)</span>
+ <span class="n">rows</span> <span class="o">=</span> <span class="n">cur</span><span class="o">.</span><span class="n">fetchone</span><span class="p">()</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="k">return</span> <span class="n">rows</span></div>
+
+<div class="viewcode-block" id="DbApiHook.run"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.run">[docs]</a> <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">sql</span><span class="p">,</span> <span class="n">autocommit</span><span class="o">=</span><span class="bp">False</span><span class="p">,</span> <span class="n">parameters</span><span class="o">=</span><span class="bp">None</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Runs a command or a list of commands. Pass a list of sql</span>
+<span class="sd"> statements to the sql parameter to get them to execute</span>
+<span class="sd"> sequentially</span>
+
+<span class="sd"> :param sql: the sql statement to be executed (str) or a list of</span>
+<span class="sd"> sql statements to execute</span>
+<span class="sd"> :type sql: str or list</span>
+<span class="sd"> :param autocommit: What to set the connection's autocommit setting to</span>
+<span class="sd"> before executing the query.</span>
+<span class="sd"> :type autocommit: bool</span>
+<span class="sd"> :param parameters: The parameters to render the SQL query with.</span>
+<span class="sd"> :type parameters: mapping or iterable</span>
+<span class="sd"> """</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
+ <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="nb">basestring</span><span class="p">):</span>
+ <span class="n">sql</span> <span class="o">=</span> <span class="p">[</span><span class="n">sql</span><span class="p">]</span>
+
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">supports_autocommit</span><span class="p">:</span>
+ <span class="bp">self</span><span class="o">.</span><span class="n">set_autocommit</span><span class="p">(</span><span class="n">conn</span><span class="p">,</span> <span class="n">autocommit</span><span class="p">)</span>
+
+ <span class="n">cur</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">cursor</span><span class="p">()</span>
+ <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">sql</span><span class="p">:</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">s</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">parameters</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">s</span><span class="p">,</span> <span class="n">parameters</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">s</span><span class="p">)</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span></div>
+
+ <span class="k">def</span> <span class="nf">set_autocommit</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">conn</span><span class="p">,</span> <span class="n">autocommit</span><span class="p">):</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">autocommit</span> <span class="o">=</span> <span class="n">autocommit</span>
+
+<div class="viewcode-block" id="DbApiHook.get_cursor"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.get_cursor">[docs]</a> <span class="k">def</span> <span class="nf">get_cursor</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Returns a cursor</span>
+<span class="sd"> """</span>
+ <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span><span class="o">.</span><span class="n">cursor</span><span class="p">()</span></div>
+
+<div class="viewcode-block" id="DbApiHook.insert_rows"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.insert_rows">[docs]</a> <span class="k">def</span> <span class="nf">insert_rows</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">table</span><span class="p">,</span> <span class="n">rows</span><span class="p">,</span> <span class="n">target_fields</span><span class="o">=</span><span class="bp">None</span><span class="p">,</span> <span class="n">commit_every</span><span class="o">=</span><span class="mi">1000</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> A generic way to insert a set of tuples into a table,</span>
+<span class="sd"> the whole set of inserts is treated as one transaction</span>
+
+<span class="sd"> :param table: Name of the target table</span>
+<span class="sd"> :type table: str</span>
+<span class="sd"> :param rows: The rows to insert into the table</span>
+<span class="sd"> :type rows: iterable of tuples</span>
+<span class="sd"> :param target_fields: The names of the columns to fill in the table</span>
+<span class="sd"> :type target_fields: iterable of strings</span>
+<span class="sd"> :param commit_every: The maximum number of rows to insert in one</span>
+<span class="sd"> transaction. Set to 0 to insert all rows in one transaction.</span>
+<span class="sd"> :type commit_every: int</span>
+<span class="sd"> """</span>
+ <span class="k">if</span> <span class="n">target_fields</span><span class="p">:</span>
+ <span class="n">target_fields</span> <span class="o">=</span> <span class="s2">", "</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">target_fields</span><span class="p">)</span>
+ <span class="n">target_fields</span> <span class="o">=</span> <span class="s2">"({})"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">target_fields</span><span class="p">)</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="n">target_fields</span> <span class="o">=</span> <span class="s1">''</span>
+ <span class="n">conn</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_conn</span><span class="p">()</span>
+ <span class="n">cur</span> <span class="o">=</span> <span class="n">conn</span><span class="o">.</span><span class="n">cursor</span><span class="p">()</span>
+ <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">supports_autocommit</span><span class="p">:</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="s1">'SET autocommit = 0'</span><span class="p">)</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">i</span> <span class="o">=</span> <span class="mi">0</span>
+ <span class="k">for</span> <span class="n">row</span> <span class="ow">in</span> <span class="n">rows</span><span class="p">:</span>
+ <span class="n">i</span> <span class="o">+=</span> <span class="mi">1</span>
+ <span class="n">l</span> <span class="o">=</span> <span class="p">[]</span>
+ <span class="k">for</span> <span class="n">cell</span> <span class="ow">in</span> <span class="n">row</span><span class="p">:</span>
+ <span class="n">l</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">_serialize_cell</span><span class="p">(</span><span class="n">cell</span><span class="p">))</span>
+ <span class="n">values</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">l</span><span class="p">)</span>
+ <span class="n">sql</span> <span class="o">=</span> <span class="s2">"INSERT INTO {0} {1} VALUES ({2});"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span>
+ <span class="n">table</span><span class="p">,</span>
+ <span class="n">target_fields</span><span class="p">,</span>
+ <span class="s2">","</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">values</span><span class="p">))</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">execute</span><span class="p">(</span><span class="n">sql</span><span class="p">)</span>
+ <span class="k">if</span> <span class="n">commit_every</span> <span class="ow">and</span> <span class="n">i</span> <span class="o">%</span> <span class="n">commit_every</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span>
+ <span class="s2">"Loaded {i} into {table} rows so far"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">()))</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">commit</span><span class="p">()</span>
+ <span class="n">cur</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="n">conn</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
+ <span class="n">logging</span><span class="o">.</span><span class="n">info</span><span class="p">(</span>
+ <span class="s2">"Done loading. Loaded a total of {i} rows"</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="o">**</span><span class="nb">locals</span><span class="p">()))</span></div>
+
+ <span class="nd">@staticmethod</span>
+ <span class="k">def</span> <span class="nf">_serialize_cell</span><span class="p">(</span><span class="n">cell</span><span class="p">):</span>
+ <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cell</span><span class="p">,</span> <span class="nb">basestring</span><span class="p">):</span>
+ <span class="k">return</span> <span class="s2">"'"</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">cell</span><span class="p">)</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s2">"'"</span><span class="p">,</span> <span class="s2">"''"</span><span class="p">)</span> <span class="o">+</span> <span class="s2">"'"</span>
+ <span class="k">elif</span> <span class="n">cell</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
+ <span class="k">return</span> <span class="s1">'NULL'</span>
+ <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cell</span><span class="p">,</span> <span class="n">numpy</span><span class="o">.</span><span class="n">datetime64</span><span class="p">):</span>
+ <span class="k">return</span> <span class="s2">"'"</span> <span class="o">+</span> <span class="nb">str</span><span class="p">(</span><span class="n">cell</span><span class="p">)</span> <span class="o">+</span> <span class="s2">"'"</span>
+ <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">cell</span><span class="p">,</span> <span class="n">datetime</span><span class="p">):</span>
+ <span class="k">return</span> <span class="s2">"'"</span> <span class="o">+</span> <span class="n">cell</span><span class="o">.</span><span class="n">isoformat</span><span class="p">()</span> <span class="o">+</span> <span class="s2">"'"</span>
+ <span class="k">else</span><span class="p">:</span>
+ <span class="k">return</span> <span class="nb">str</span><span class="p">(</span><span class="n">cell</span><span class="p">)</span>
+
+<div class="viewcode-block" id="DbApiHook.bulk_dump"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.bulk_dump">[docs]</a> <span class="k">def</span> <span class="nf">bulk_dump</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">table</span><span class="p">,</span> <span class="n">tmp_file</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Dumps a database table into a tab-delimited file</span>
+
+<span class="sd"> :param table: The name of the source table</span>
+<span class="sd"> :type table: str</span>
+<span class="sd"> :param tmp_file: The path of the target file</span>
+<span class="sd"> :type tmp_file: str</span>
+<span class="sd"> """</span>
+ <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">()</span></div>
+
+<div class="viewcode-block" id="DbApiHook.bulk_load"><a class="viewcode-back" href="../code.html#airflow.hooks.DbApiHook.bulk_load">[docs]</a> <span class="k">def</span> <span class="nf">bulk_load</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">table</span><span class="p">,</span> <span class="n">tmp_file</span><span class="p">):</span>
+ <span class="sd">"""</span>
+<span class="sd"> Loads a tab-delimited file into a database table</span>
+
+<span class="sd"> :param table: The name of the target table</span>
+<span class="sd"> :type table: str</span>
+<span class="sd"> :param tmp_file: The path of the file to load into the table</span>
+<span class="sd"> :type tmp_file: str</span>
+<span class="sd"> """</span>
+ <span class="k">raise</span> <span class="ne">NotImplementedError</span><span class="p">()</span></div></div>
+</pre></div>
+
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